关于java:Java获取视频文件时长

网上大多数博客的代码通过测试都是无用的，因为业务须要所以本人实现并封装了工具类供大家参考。

引入jave（多媒体解决包） pom依赖

<!-- jave 外围依赖 --><dependency>     <groupId>ws.schild</groupId>     <artifactId>jave-core</artifactId>     <version>2.4.6</version></dependency><!-- 依据不同操作系统引入不同FFmpeg包 --><!-- window32位 FFmpeg --><dependency>     <groupId>ws.schild</groupId>     <artifactId>jave-native-win32</artifactId>     <version>2.4.6</version></dependency><!-- window64位 FFmpeg --><dependency>     <groupId>ws.schild</groupId>     <artifactId>jave-native-win64</artifactId>     <version>2.4.6</version></dependency><!-- linux64位 FFmpeg --><dependency>     <groupId>ws.schild</groupId>     <artifactId>jave-native-linux64</artifactId>     <version>2.4.6</version></dependency><!-- macos64位 FFmpeg --><dependency>     <groupId>ws.schild</groupId>     <artifactId>jave-native-osx64</artifactId>     <version>2.4.6</version></dependency><!-- Apache Commons --><dependency>     <groupId>commons-fileupload</groupId>     <artifactId>commons-fileupload</artifactId>     <version>1.2.1</version></dependency><dependency>     <groupId>commons-io</groupId>     <artifactId>commons-io</artifactId>     <version>2.7</version></dependency>

获取视频文件时长工具类：

import com.google.common.collect.ImmutableList;import lombok.extern.slf4j.Slf4j;import org.apache.commons.io.FilenameUtils;import org.springframework.web.multipart.MultipartFile;import ws.schild.jave.MultimediaInfo;import ws.schild.jave.MultimediaObject;import java.io.File;@Slf4jpublic class FileUtil {    private static ImmutableList<String> videoSuffixList = ImmutableList.of("mp4", "mov", "avi", "mkv", "m4v", "wmv", "asf", "asx", "rm", "rmvb", "3gp", "dat", "flv", "vob"); /** * 获取视频时长 * @param file 视频文件 * @return 时长（秒） */ public static int getVideoDuration(MultipartFile file){        int duration = 0; File tempFile = null; try{            tempFile = File.createTempFile(UUIDUtil.uuid(), "." + FilenameUtils.getExtension(file.getOriginalFilename())); file.transferTo(tempFile); MultimediaObject multimediaObject = new MultimediaObject(tempFile); MultimediaInfo info = multimediaObject.getInfo(); duration = (int) Math.ceil((double) info.getDuration() / 1000); } catch (Exception e){            log.error("获取视频时长失败", e); } finally {            if (tempFile != null){                tempFile.delete(); }        }        return duration; }    /** * 判断文件是否是视频 * @param file 文件 * @return 是否是啊视频 */ public static boolean isVideo(MultipartFile file){        return videoSuffixList.contains(FilenameUtils.getExtension(file.getOriginalFilename())); }}

在下面的代码中有一个坑须要留神

MultipartFile.transferTo会报FileNotFound异样。

起因：CommonsMultipartResolver的maxInMemorySize默认值是10M，所以文件大小小于10M不会创立到本地，所以须要设置

@Configurationpublic class MultipartResolverConfig {    @Bean public CommonsMultipartResolver multipartResolver(){        CommonsMultipartResolver resolver = new CommonsMultipartResolver(); resolver.setDefaultEncoding("UTF-8"); resolver.setMaxInMemorySize(-1); return resolver; }}